I had to buy this book for a course in fluid mechanics last semester, which turned out to be one of my favorite courses. That was due mainly to the fact that I had an amazing professor, but it was largely supported by the ease of use of this book. Reference sheets were quick and easy to use, and proved themselves invaluable when I had to look up numbers or equations in stressful times. The presentation of the material is very clear, and written in a way that is easy to understand so you can focus on the theory and the ideas, not on running to get a dictionary to look up big, complex words and their meanings (...not that an engineer would own a dictionary...or know how to use a non-internet-based one, lol). \r \r WARNGING! CUIDADO! My only real point to pick with this book is that someone did a poor job editing it. The layout of the chapter problems is such that the diagrams for some are on different pages than the accompanying text, or located several problems before or after in the most awkward positions, meaning you really have to pay attention to the figure number to prevent drawing the wrong picture/information (which I have done several times). \r \r And, to make matters worse, some problems actually don't have all the info needed to complete them! Several problems had info cut off, or just not present, in their diagrams. \r \r While those are just temporary, minor annoyances and shouldn't deter anyone from buying this book, just be aware that they are present. That's the only reason this got a 4 instead of a 5.